Question 6: Fill the blanks with the correct prepositions.
1. Our group is planning to help the community ....... encouraging all members to participate ....... a recycling program.
2. To be a member of our organization, you can register ....... today.
3. Please send an ambulanc ....... Hoang Hoa Tham School.
4. ....... your help, I can't do the exercises.
1.by/in
2. from
3. to
4.without